Electric protector for buildings.



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JOSEPH A. POOH, OF NET ORLEANS, LOUISIANA.

ELECTRIC PROTECTOR FOR BUHLDENGS.

SPECIFICATION forming part of Letters Patent No. 637,409,'dated November21, 1899.

Application tiled April 2l, 1899. Serial No. 713,938. (No model.)

To all wiz/0m t may concern:

Be it known that I, JOSEPH A. POCH, a citiyZen of the United States ofAmerica, and a resident of New Orleans, in the parish of Orleans andState of Louisiana, have invented a new and useful Improvement inElectric Protectors for Buildings, of which the following is aspecification.

My invention relates to mechanism for protecting buildings against thedanger from ire caused by abnormal currents arising outside of thebuilding-for example, when the lines become crossed while carryingcurrents of high potential with lines conducting low potential whichoperate translating devices inside the said building.

The invention will be understood by reference to the accompanyingdrawing.

The figure is a vertical section of the mechanism shown in elevation.Some of the parts are not in section.

The wall of the building is represented by the numeral 1.

2 is a mere outline of one of my insulators for passing a main conductor2 through the wall 1 in an air and water tight manner and forming thesubject-matter of prior patents and applications, but having nothing todo with the novelty of this invention.

3 is a hook supported to be turned to the left against the action of thespiral spring et. The conductor 2/ has a hook 2. The hook 3 is held upby means of a fuse 5, which connects the two hooks 2" and 3. At d, whichis in the path of the rotary hook 3, is a cap to be exploded by thehammer 3 on the hook 3 when the fuses 5 melt.

At the lower part of the figure may be seen representations ofsubstantial duplicates of the above-named elements, and accordingly theyare similarly numbered, the only difference being that the conductor 2'in one case is a positive and in the other case a negative pole.

I will now follow the invention from the upper spring 4, the sameforming a part of the circuit from the fuse 5 and lever 3. The conductor6 connects the spring e tothe binding-screw 6, attached to the frame 7.The binding-screw 8 is connected through the metal frame 7 with thebinding-screw 6 and also connects with the main line 9 inside thebuilding. The other main line inside the building is 13. Connecting thetwo lines is a very high resistance coil 10, forming a solenoid.

11 is a choke-coil connected between the binding-post 8 and the post 12of the line 13.

14 is a carbon-plate to which the bindingpost 12 is attached. On theother edge of the plate 14 is a binding-post 17, which connects with thelower spring 4, and so on with the outside line. The two posts 12 and 17are connected together by the conductor 15.

22 is a rod having a carbon-terminal 1S, the holder 19 for the carbonbeing secured at the lower end of the rod 22, at the upper end of whichis a trip-collarl 23, attached thereto.

2O is an adjustable collar for adjusting the tension of a helical spring22', arranged between said collar and the lower part of the frame 7 andtending to force the carbon-terminal 1S rapidly against the carbon-plate14. The rod 22 is held up by the hook 24, whose degree of movement isregulated by the stop at 25 and resisted by spring 25'.

26 is a bent trip-lever for releasing the hook 24 from thetripping-collar 23.

2S is an adjustable screw for adjusting the tension of the spring 2Supon the lever 26, which is slotted to receive the pin 29 on the core 29belonging to the solenoid 10.

32 is a cord having a handle 33 for operating the device manually whendesired.

30 is a rack carried by the core 29 and engaging with a pinion 31 forturning the pointer 31', so that the condition of the device,whether itis normal or abnormal, may be known.

3S is a casing for the lower portions of the mechanism. On the top ofthis 'is an inverted glass vessel 36, having a slot 29" for the entranceof the hook 2. Inside of the vessel 36 is a glass cylinder 37, open atboth ends and having a slot 39' running its whole length.

34E and 35 are brackets attached to the wall 1 for holding thecontaining vessel 38.

The operation of the mechanism is as follows: When an abnormal voltage,suicient to cause the armature of the electromagnetic device to movefrom its normal position, this movement is transmitted by lever 26 tohook 24, which in turn trips the rod 22, and the tension of the spiralspring 22', in combination with the force of gravity, instantly forcesIOO carbon-point 1S against carbon-plate 111 and short-circuits the mainlines, and in consequence an abnormal rush of current passes through thefuses 5, which are of a predetermined carrying capacity, and which meltand release the hook-levers 3, which fall rapidly away from hooks 2,increasing the length of arc-gap to a point of safety and exploding capsto signal the occupants of said building so protected.

I claim as my inventionl. A protector for automatically cutting out theinterior Wiring in a building from the outside Wiring, consisting of thecombination with fuses, of means, for producing a sound by concussion,located in the paths of said means, short circuiting terminals includedin circuit between said fuses and normally separated, and anelectromagnetic device of normally separated and one of them movable,and in circuit between said fuses, a spring tending to press theterminals together, means for holding said terminals apart, against theaction of said spring, a trippinglever for operating said means, asolenoid in the electric circuit, and having a core provided With a pinwhich is located in a slot in said lever, and an indicator for showingthe position of said core.

3. A protector for automatically cutting out the interior Wiring in abuilding from the outside Wiring, consisting of the combination withfuses, in circuit with the outside and inside Wiring, of terminalsnormally separated and adapted to come together, a trippingcollar on oneof the terminals, a lever upholding said terminal, a tripping device forreleasing said lever from said collar, and an electromagnet controllingsaid tripping device, said lever being adjustable relatively, to saidcollar and to said device.

In testimony whereof I have hereunto subscribed my name this 18th day ofApril, 1899.

JosEPi-I A. roei-ni. [n s] lVitnesses:

J. MAXIME QUEYROUZE, PIERRE OLiviEn.

